Safety valve



Jan. 5, 1932. w. L. BATEN ET AL SAFETY VALVE Filed March 20, 1930 v Invenlor W1'Z/1'ah4 Z ai eh' Josppz 78. 799w]? q By 2%; 5 2

Allomey Patented Jan. 5, 1932 UNITED STATES PATENT. OFFICE WILLIAM L. BATEN AND JOSEPH n. BEVILL, or HAYNESVILLE, Louisiana SAFETY vALvE Application filed March 20, 1930. 7 Serial No. 437,501.

This invention relates to valves, and has as its primary object to provide certain new and useful improvements in safety valves.

A primary object of this invention is to provide a valve having means associated therewith whereby the ball elements of'the valve may be manually moved from oneseated position to another seated position and retained in the last mentioned seated position under action of the pressure passing through the valve so that when pressure ceases in the valve casing, the valve by gravity will fall to a seated position thusclosing the valve.

A still further object of the invention is to provide a valve of the character above mentioned, which is comparatively simple in con struction, thoroughly reliable, practical and efiicient in operation and otherwise well adapted for the purpose designed. I

With the above and numerous other objects and advantages of the invention will become apparent during a study of the following description taken in connection with the accompanying drawing, wherein the single view therein illustrated is a vertical longitudinal sectional View taken through the valve embodying the features of the present invention.

lVith reference more in detail to the drawing it will be seen that our improved valve comprises a casing designated generally by the reference character '5 and having oppositely disposed inlet and exhaust ports 6 and 7 respectively, said ports being internally threaded as shown so that the valve may be suitably coupled within a water lining or the like.

I Interposed between the inlet and outlet port, there is arranged within the casing 5 a partition 8 dividing the easing into a chamber 9 communicating with the intake port 6, and a chamber 10 communicating with the exhaust port 7. The horizontal portion of the partition 8 has an opening or passage 11 formed therein affording communication be- 5. tween the passages 9 and 10, and within the opening 11 is formed a suitable seat 12 for a ball valve 13. o 1 v At the top thereof thecasing 5 is provided with an internally threaded neck 14, and a 59 plug 15 is threaded within the neck 14 as controlled by the clearly illustrated.

at 16, the lowerend of the plug extending into the chamber 9 above'the horizontal portion of closed. I Y

Opening inwardly from said lower end, the plug 15 is provided with a socket 17' which socket 1'? at its upper end merges into a suitable valve seat 18 for a'purpose to be hereinafter more fully set forth. Opening inwardly from the upperand outer end, the'plug 15 is provided with a longitudinal valve chamber 19 provided at its inner 'end with a valve seat 20 upon which is normally seated a ball valve 21 operable within the chamber 19. i i An akial bore 21 extends through the plug 15 from the seat-2O to the seat'18; A closure cap 22 is threaded in the upper end. of-the chamber 19 and this cap 22-has an axial bore 23 formed therein providing a ventopening relatively smaller ball the partition 8 as clearly dis} valve 21.

i In the bottom thereofdirectl'y below the enlarged head 26 normally seated-on the bottom of the-casing 5. The other end of the rod 25 extends outwardly of the casing and is normally-encased within a suitable protector casing or cylinder 26 threaded at itsup-' per opened end to a depending lug 27 formed integralwith the, bottom of the casings as.

mproved valve may The operation of our bebriefiy stated as follows: 7

Normally, the parts are in. the positions suggested by full lines in the drawing, and atwhich time pressure is confined in the cham her 9, certain of the pressure actingonthe ball valve 21 to retain it in its uppermost position. To permit passage'of the water or. I

other fiuidfrom the chamber 9 into the chamber 10, casing -26 is removed, and with the finger, stem 25 is moved upwardly so that the head at the upper end of the stem engages the ballvalve 13 urging the same from its seat 12 into the socket 17 to assume the dotted line position shown in the drawing, thus per mitting passage of fluid from the chamber 9 to the chamber 1-0, it being understooithat j a r 1,889,730

the rod 25 is allowed to drop back to its full and cooperating with said valve seat therein. line position subsequent to the placing of the In testimony whereof we afiix our signaball valve 13 in the dotted line position with tures. in the socket 17. WILLIAM L. BATEN. As the valve 13 is moved upwardly in the JOSEPH R. BEVILL.

socket 17, there is of course a decrease of pressure in the chamber 9 with a proportionate decrease of pressure in the valvecha-mber 19 permitting the ball valve 21 to descend to the dotted line position suggested in the drawt 75 ing for engagement with the seat thus 00- 3 7 operating with the valve 13 in its dotted line position for closing communication between the chamber 9 and the chamber 19. p j r v 15 The fluid passing from the chamber 9 into i so the chamber 10 will provide suificient pres-. sure for returning the valve 13 in its dotted line position as is thought apparent. When the flow of fluid to chamber 9 is cut off by t any suitable means :not shown, pressure of t 1 V I 85 the'fluid passing from chamber 9 to chamber 10 will consequently decrease, permitting the valve 18. to return to its normal position engaging seat 12, when the flow to chamber 9 r .5 may be then repeated so as to provide sufi 1 I 9o ficient pressure in the chamber 9 as to utilize certain of the pressure for acting on the ball valve 21 to move the same upwardly to its full line position shown in Figure 1', thus l completely closing the 'valve against the V V. g5

escape of pressure, and against passage of fluid fromthe chamber 9 to the chamber 10.

Even though we have therein shown and de-- scribed the preferred embodiment of our inventionrit isto beunderstood that the same I r 100 is susceptible to changes fully comprehended by the spirit .of the invention as herein described, and the scope of the appended claim.

Having thus described our invention what 49 we claim as new is: a V

In a safety valve of theclass described, a valve casing having oppositely disposed inlet and outlet ports, a partition arranged in the casing having an opening formed therein 7 providing a valve seat, a ball valve normally 1 disposed. on said seat, a plugextending inwardly from the top of the casing above said valve seat, said plug having its inner end provided with a socket merging at its inner end 7 into a secondary valve seat in alinem'ent with the first mentioned valve seat; and a rod slidable through the bottom of said casing' forf moving said ball valve from said first mentioned seat into engagement with the second men'tioned seat, a protector casing depending from the bottom of the first mentioned valve casing for receiving the lower end of said 7 rod, andsaid plug having an axial valve o (2-0 chamber arranged therein communicating I Y 125 with said socket and being provided with a valve seat at the inner end thereof, a vent cap threaded in said plug closing the outer end of said last mentioned chamber, and a ball valve operable in said last mentioned chamber I I 

